Peter, I think it depends entirely on how the product is installed. The various methods required might include,
1. LPA modules 2. Nucleus extensions 3. SVC(s) 4. New APF libraries 5. New linklist libraries 6. PPT modifications 7. Front-ending of existing SVCs 8. Console definition modifictions 9. Sub-system defintions .......and many other types of changes to system libraries or definitions. Each site will have standards about whether they allow such changes in-flight, or require an IPL. There are benefits with the IPL method. One is that you prove the system configuration. You might also wish to consider that installing on one system is fine, but then the product may need to be activated on another LPAR in the Sysplex. Often however, the system initialisation changes can be mode for the first install and then library updates can be performed for an update. Hope that helps. Lennie Dymoke-Bradshaw | Security Lead | RSM Partners Ltd Web: www.rsmpartners.com ‘Dance like no one is watching. Encrypt like everyone is.’ -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Sent: 16 September 2019 18:54 To: IBM-MAIN@LISTSERV.UA.EDU Subject: [IBM-MAIN] LPA - IPL or dynamic Hi I have seen few vendors suggesting an IPL as requisite if you are doing the product install for first time and If it's upgrade then it's not required. I am ignorant here. How does this makes a difference ? Why a dynamic update won't work if it's a first install ? Programmatically how does it work from zOS perspective. Apology if this question was already discussed here if so please point me to the discussion link . Regards Peter ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
